Error(s) in re-building vignettes:
--- re-building 'pagoda2.walkthrough.Rmd' using rmarkdown

Attaching package: 'igraph'

The following objects are masked from 'package:stats':

    decompose, spectrum

The following object is masked from 'package:base':

    union


Attaching package: 'dplyr'

The following objects are masked from 'package:igraph':

    as_data_frame, groups, union

The following objects are masked from 'package:stats':

    filter, lag

The following objects are masked from 'package:base':

    intersect, setdiff, setequal, union

Installing package into 'D:/temp/RtmpuUCXsK/RLIBS_d74030c625ab'
(as 'lib' is unspecified)
trying URL 'https://kharchenkolab.github.io/drat/src/contrib/p2data_1.0.0.tar.gz'
Content type 'application/gzip' length 6265057 bytes (6.0 MB)
==================================================
downloaded 6.0 MB

* installing *source* package 'p2data' ...
** using staged installation
** R
** data
*** moving datasets to lazyload DB
** byte-compile and prepare package for lazy loading
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded from temporary location
*** arch - i386
*** arch - x64
** testing if installed package can be loaded from final location
*** arch - i386
*** arch - x64
** testing if installed package keeps a record of temporary installation path
* DONE (p2data)

The downloaded source packages are in
	'D:\temp\Rtmp2NKjYH\downloaded_packages'
3000 cells, 12546 genes; normalizing ... 
Using plain model 
Winsorizing ... 
log scale ... 
done.

calculating variance fit ...
 using gam 
173 overdispersed genes ... 173
persisting ... 
done.
running PCA using 2000 OD genes .
.
.
.
 done

running tSNE using 2 cores:

0%   10   20   30   40   50   60   70   80   90   100%
[----|----|----|----|----|----|----|----|----|----|
**************************************************|
Quitting from lines 283-284 (pagoda2.walkthrough.Rmd) 
Error: processing vignette 'pagoda2.walkthrough.Rmd' failed with diagnostics:
argument is of length zero
--- failed re-building 'pagoda2.walkthrough.Rmd'

SUMMARY: processing the following file failed:
  'pagoda2.walkthrough.Rmd'

Error: Vignette re-building failed.
Execution halted